Rotary tooth-brush.



` H. ALLAN. 'ROTARY TOO'IH BRUSH. APPLIUATION FILED JULY 29, 1914.

Patented Mar. 30, 1915.

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HARRY ALLAN ,.01? TORONTO, ONTARIO, CANADA.

ROTARY TOOTH-BRUSH.

Specification of Letters Patent.

Patented Mar. 30, 1915.

Application led July 29, 1914. Serial No. 853,915.

water tap or faucet.

A further object of the invention is to "provide a novel construction of motor casing, detachable brush, and an adjustable brush guard, allowing brushes to be changed as desired and securing an efficient guarding action whereby injury to the lips from the brush is prevented.

The invention consists of the features of construction, combination and arrangement of parts herein fully described and claimed, reference being had to the accompanying drawing in *whichz-` Figure 1 is a perspective View showing the device applied to a faucet for use. Fig. 2 is a perspective View of the casing, brush and guard. Figs. 3 and 4 are sections on the lines 3 3 and 4-4 of Fig. 2. Fig. 5 is a sectional view through the motor casing. Fig. 6 is a view of the motor wheel.

In carrying my invention into practice, I provide a disk shaped motor casing 1 comprising a body 2 and a lid or cover 3, said lid or cover being threaded or otherwise detachably engaged with the body. At points in its periphery the casing body is provided with a tangentially disposed inlet nozzle 4 and a radially disposed outlet or discharge nozzle 5, which nozzles are adapted to receive the ends of water supply and discharge pipes or tubes 6 and 7, made of rub-l ber or other suitable material. The free end of the hose or tube 6 is preferably flared to engage a water tapA or faucet 8, and is provided with "a' chain fastening 9, lor other equivalent fastening, for holding it in position t ereon. In practice, the hose 6 may be ap l ied to one of the water taps above a lavatory basin, and thehose 7 arranged to posed at one side of its diametrical center and having an annular series of radial blades 14 projecting laterally therefrom. The disk 13 turns in contact with the inner face of the boss 10, which is of less depth and width than the casing, the disk being of such thickness as to t between the said face of the boss and the cover plate 3, whereby it is guided for motion in a true path. The blades 14 project laterally beyond one side of the disk so that their inner ends ride` in contact with the periphery of the boss, while their outer ends ride in contact with the inner periphery of the casing. A motor wheel of simple construction is thus provided which is designed to'prevent leakage and to be efficiently propelled by the motive liuid without the necessity of employing complex packing or guiding means. It will be un-` vided with bristles around the saine, and

said body has a socketed shank 18 engaging the outer end of the shaft and detachably secured thereto by a set screw 19 oi' other suitable fastening means. By this construction brushes of different kinds may be applied to the shaft for use, and a newl brush may be readily substituted for an old one. The shaft l5 revolves within a partially circular4 guard 20 having at its outer end a spoon shaped enlargement 21 forming a guard cap within which the brush revolves and which partially receives said' brush. The opposite or inner end of this guard member is formed with a right angularly bent bracket arm 21 formed with a slot 22 receiving a set screw 23, whereby it is detachably secured to the casing body, the

Y construction also being such that the guard mag' be adjusted toward and from the shaft an brush, so that the guard may be moved away from the brush to allow the brush in use to be removed and a new one substituted therefor, and then arranged and secured in applied position. The function of the guard is'to prevent the lips of the user from `being injured by contact with the brush, as will be readily understood. 4

. 'lhe mode of application of the device to a faucet or other source of water supply will be readily understood, and it will be seen that when the device is in use the brush will be revolved ata desired rate of speed, thus "adapting it to exert a proper vcleansing action. The device is properly held on ari' ranged in osition for use and the flexibility ofthe tu es 6 and 7 and comparatively small sizeof the motor adapt the brushto. be handled "and properly ad'usted in the A, lno'uthas occasion' requires.- hermanifold '2g-advantages of thev invention will be evident .from the foregoing .1 dan 1. A rotar -brush comprising a casing, a

description. .1

i fsh'aft jrgirnja ed in and'extending Vfrom said casing, a brush carried bythe prcjevcting end of the shaft,.means'carried b the cas- Ting for rotating'the shaft and brus a chan? Q neled; guard partially inclosing the shaft v(loliieot this patent may he obtained f or insane? y the casing for rotating the shaft and brush, a channeled guard partially inclosing .the'shaft and provided with a spoon-shaped portion partially inclosing the brush, said 'guard Ahaving its channeled portion. pro- .,vided at its inner end with an arm bent at right angles thereto and formed with a longitudina slot, and a binding screw passing through said slot and entering the adjacent flat side of the casing, whereby .the guard and its spoon-shaped portion may be adjust# ed toward and from the shaft and brush and fixed in adjusted position tothe casing.

In testimony whereof I ailix my signature in presence of two witnesses.

Y HARRY ALLAN.

Witnesses:

KATHARINE Woons,

JEAN WHITE.

ve cents each, by addressing the Commissioner of Patents, Washington, D. 0. f 

